Radiation heater



Feb- 4, 1969 cARL-ANKER MEJYR 3,4 25Q406 RADIATION HEATER Filed Jan. 31,1967 Fig. 1

United States Patent O 10,890/66 U.s. Cl. 126-92 Int. Cl. F24c 3/04;F16b 7/00; E16! 21/00 9 Claims ABSTRACT OF THE DISCLOSURE A gas burningradiation heater including pivot struct-ure permitting rotationalmovement of the heater relative to its fuel supply source. Also includedis a releasable anti-rotation structure operatable to selectivelymaintain the heater in any one of a number of predetermined fixedpositions.

The present invention relates to a radiation heater which is intended tobe secured to a bottle of gas and capable of being swivelled in relationthereto, and .by mean-S of which it is thus possible to change thedirection in Which the rays of heat are projected without it beingnecessary to change the position of the gas bottle to which theradiation heater is connected.

The radiation heater according to the invention is, for this purpose inaddition to being provided with a burner having a surrounding reflectorand la gas Valve also provided with a curved 'burner pipe secured to the'burner and which is pivotally connected, at its end facing away fromthe burner, to the gas Valve at an angle towards the axis of the pipeconnecting the gas Valve to the outlet stub of the gas bottle. The gasValve is suitably provided with a Valve nozzle which forms an angle withsaid connecting pipe and Which serves as a pivot around which the burnerpipe can swivel. The nozzle and the end of the burner pipe connected tosaid Valve are suitably designed in a special way, so that the burnerpipe can be made to adopt various angular positions and remain in thesepositions and be restrained against axial displacement. For this purposethe nozzle is provided with a series of teeth located at a shortdistance from its point of attachment in the Valve housing and the endof-` the burner pipe is provided with a collar situated around saidseries of teeth, the collar having a circular groove arranged on theoutside thereof which along two short, diametrically situated portionsmerges with holes passing through the walls of the pipe, said grooveaccommodates a leaf spring which is bent inwardly at one end andprojects through one hole in the pipe wall and snappingly engages theseries of teeth of the nozzle. 'Ihe other end of the spring is dividedinto two tongues of different lengths of which the shorter is bentinwardly and engages the nozzle through the second hole in the pipewall, between the series of teeth and the nozzle attachment point,there'by restraining the burner pipe against axial movement.

The invention will be more closely described below with reference to theaccompanying drawing wherein:

FIGURE 1 is a perspective view illustrating a radiation heater embodyingthe concepts and principles of the invention;

FIGURE 2 is an enlarged perspective view taken sub- 'stantially alongline 2-2 of FIG. 1, certain parts having been broken away to revealconstructional details; and

FIGURE 3 is a cross-sectional view of the nozzle of the heater andassociated members.

The radiation heater shown in FIG. 1 mainly comprises a burner 1 havinga surrounding reflector 2, a

ice

ourved elongated burner pipe 3, connected to the burner, and a gas Valve4 having a Valve housing 5 which by its inlet means in the nature of aconnecting pipe 6 is adapted to be vertically connected to and inalignment with the outlet stub 7 of bottle of gas 8.

Housing 5 referably includes an upper extension Sa which mounts outletmeans in the nature of a cylindrical nozzle 9. Extension Sa isconfigured so that nozzle 9 extends at an angle relative to pipe 6. Ascan best be seen viewing FIG. 2, nozzle 9 is telescopically receivedwithin pipe 3 and serves as a pivot whereby pipe 3 and thereby theheater may be rotated about the longitudinal axis of nozle 9. Nozzle 9is provided with structure in the nature of a series ofcireumferentially spaced, radially extending teeth 10 disposed adjacentextension ISa. The end of the Iburner pipe is provided with 'a collar 3adisposed around the teeth 10, the said collar 3a being provided with anoutwardly Opening anmilar groove 11 extending therearound. Along twoshort diametrically situated portions the groove 11 merges with holes 12and 13 passin'g through the tube wall. Arranged in the groove 11 isstructure in the nature of a ourved leaf spring 14, the one end of whichis bent across its whole Width presenting a radially movable element 14awhich projects through hole 12. Spring 14 yielda'bly Ibiases element 14ainto engagement with the series of teeth 10 through the hole 12 andserves to retain the pipe 3 in various angular positions. Thus,

spring 1,4 and teeth 10 are relatively movable into and out ofengagement With one another to present releasable anti-rotation meansfor selectively maintaining pipe 3 in any one of of a plurality offixed, predetermined positions relative to nozzle 9. The opposite end ofthe leaf spring 14 is divided into two tongues 14a and 14b of differentlengths, of which the shorter lower tongue 14bv is bent in and engagesthe nozzle through the hole 13 in the space between the series of teeth10 and the attachment point of the nozzle 9 in the -Valve housing. Forthis purpose the Width of the lower tongue 14b is equal to the width ofsaid space, the burner pipe 3 consequently being fixed relative to thenozzle 9 in the longitudinal direction.

To permit air for combustion to flow into the burner pipe 3 and mix withthe fuel gas the said pipe is provided with holes 15 (see FIG. 1) in thewall of the pipe at the same level as the openinig of the nozzle 9. I-fa clearance is formed between the burner pipe 3 and the nozzle 9 air mayalso lbe introduced through the clearance, the air being sucked in atthis position by the ejector action of the fuel gas. Consequently it isnot necessary to seal the connection between the burner pipe and thenozzle, since there is no risk that the gas will escape therethrough.

It is thus possible by means of the described radiation heater accordingto FIG. 1 to direct the heat substantially horizontally and if the saidheater is turned to positions other than that shown on the drawing amore or less upwardly directed heat radiation is obtained. Naturally itis possible to bend the burner pipe still further than that shown inFIG. 1, whereby a downwardly directed radiation of heat is alsoobta'inable.

I claim:

1. A radiation heater assembly adapted for connection to a Verticaloutlet stub of a vgas bottle, said assembly comprising:

a gas burner provided with a surrounding reflector;

a gas Valve having inlet means adapted for connection to said stub inalignment therewith and elongated outlet means disposed at an anglerelative to said inlet means; and

an elongated, ourved burner pipe having one end thereof secured to saidburner and the other end pivotally connected to said outlet means forrotation about the longitudinal axis of the latter.

2. A radiation heater as set forth in claim 1 wherein is includedreleasable anti-rotation means for selectivity mantaining said burnerpipe in a predetermined position relative to said Outlet means.

3. A radiation heater as set forth in claim 1 wherein said Outlet meansincludes an elongated nozzle extending outwardly from said Valve alongsaid axis, said nozzle being telescopically received within said otherend of the burner pipe and serving as a pivot therefor.

4. A radiation heater as set forth in claim 3 wherein is provided aplurality of air holes through said pipe adjacent the outer end of thenozzle.

5. A radiation heater as set forth in claim 3 Wherein the nozzle and thepipe are configured to present a clear- =ance therebetween for passageof air.

6. A radiation heater as set forth in claim 3 wherein is includedreleasable anti-rotation means comprising first structure on the nozzleand second structure On said other end of the burner pipe, saidstructures being relatively movable into and Out of engagement With oneanother for selectively maintaining said nozzle and said pipe in aplurality of fixed positions.

7. A radiation heater as set forth in claim 6 wherein said structure onthe nozzle comprises a series of circumferentially spaced teethextending radially outwardly from the nozzle at a location spaced fromthe outer end of the nozzle, said other end of the burner pipepresenting a collar at its terminal end disposed around said teeth, saidstructure on the pipe comprising a movable element mounted on saidcollar and means yieldably biasing said element into engagement Withsaid teeth.

8. A radiation heater as set forth in claim 7 wherein said collar isprovided with .an outwardly Opening groove extending therearound and anOpening extending from the groove radially through the collar, saidstructure on the pipe comprising a curved leaf spring disposed withinthe groove and having one end thereof bent to present said element, saidelement projecting through the Opening.

9. A radiation heater as set forth in claim 8 Wherein is provided asecond Opening through said collar spaced from the Opening for saidelement, there being a tongue on said spring spaced from said elementand extending through said second Opening to engage said nozzle beneaththe teeth to limit axial movement of the pipe relative to the nozzle.

References Cited UNITED STATES PATENTS 1,473,844 11/1923 Garbarini.1,713,827 5/ 1929 Hanson.

FOREIGN PATENTS 547,922 10/ 1922 France. 591,931 4/1959 Italy.

FREDERICK L. MATTES ON, JR., Primary Examner.

R. A. DUA, Assistant Examiner.

U.S. Cl. X.R.

